v3.26.1
Investments (Rollforward of the Allowance for Credit Losses for Mortgage Loans by Portfolio Segment) (Details) - Mortgage Loans - USD ($)
$ in Millions
 3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Financing Receivable, Allowance for Credit Loss [Roll Forward]    
Financing receivable, allowance for credit losses, beginning of period $ 200 $ 178
Current period provision 10 43
Charge-offs, net of recoveries 0 (12)
Financing receivable, allowance for credit losses, end of period 210 209
Commercial    
Financing Receivable, Allowance for Credit Loss [Roll Forward]    
Financing receivable, allowance for credit losses, beginning of period 134 106
Current period provision 11 40
Charge-offs, net of recoveries 0 0
Financing receivable, allowance for credit losses, end of period 145 146
Agricultural    
Financing Receivable, Allowance for Credit Loss [Roll Forward]    
Financing receivable, allowance for credit losses, beginning of period 20 30
Current period provision 0 4
Charge-offs, net of recoveries 0 (12)
Financing receivable, allowance for credit losses, end of period 20 22
Residential    
Financing Receivable, Allowance for Credit Loss [Roll Forward]    
Financing receivable, allowance for credit losses, beginning of period 46 42
Current period provision (1) (1)
Charge-offs, net of recoveries 0 0
Financing receivable, allowance for credit losses, end of period $ 45 $ 41